session: fix --interface on custom HTTPAdapters

[bastimeyer]

Noticed that bug while updating the typing annotations.

The --interface CLI argument (and its respective session option interface) currently only affects the HTTPAdapters mounted at http:// and https:// (the default configuration). Some plugins however not only override the default adapters, but extend the adapter mapping with custom schemes or additional hostnames that must match:

• streamlink/src/streamlink/plugins/abematv.py

  Lines 261 to 263 in 20a58b9

  	self.session.http.mount("abematv-license://",
  	AbemaTVLicenseAdapter(self.session, deviceid,
  	self.usertoken))

• streamlink/src/streamlink/plugins/kick.py

  Line 48 in 20a58b9

  self.session.http.mount("https://kick.com/", KickAdapter())

• streamlink/src/streamlink/plugins/filmon.py

  Lines 184 to 186 in 20a58b9

  	self.session.http.mount("https://filmon.com", adapter)
  	self.session.http.mount("https://www.filmon.com", adapter)
  	self.session.http.mount("https://vms-admin.filmon.com/", adapter)